A 16-in. natural gas pipeline near Racine, Wisconsin, had been in service for some 30 years. In 1982 road widening operations on a line parallel with the pipe resulted in a heavily trafficked concrete roadway being positioned immediately above the pipe for a considerable distance, with varying depth of cover. The opportunity was taken to instrument three sites, one with 'normal' cover of about 36 ins. , one with 'shallow' cover of about 19 ins. , and one with 'deep' cover of about 72 ins. The instrumentation included pipe strain gages, accelerometers, soil strain coils, soil stress gages, soil moisture blocks, temperature sensors and pipe pressure sensors. The paper discusses the instrumentation, measurements, and study results.